Complete your Poison Spyder DeFender installation with these "Spyder" Side Inserts, which fill the access holes in the side panels of the DeFender. DeFender "Spyder" Side Inserts are CNC laser cut from 1/8" aluminum plate. The Spyder logo cut-out acts as an air vent to promote airflow through the engine bay. If a solid wall is preferred, the Spyder Side Inserts can be stacked with the solid inserts that came with your DeFenders..